14b43beb7c
TBR=niklas.enbom@webrtc.org Review URL: https://webrtc-codereview.appspot.com/915006 git-svn-id: http://webrtc.googlecode.com/svn/trunk@2963 4adac7df-926f-26a2-2b94-8c16560cd09d
120 lines
3.5 KiB
C++
120 lines
3.5 KiB
C++
/*
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* Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef WEBRTC_MODULES_RTP_RTCP_SOURCE_TMMBR_HELP_H_
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#define WEBRTC_MODULES_RTP_RTCP_SOURCE_TMMBR_HELP_H_
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#include <vector>
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#include "typedefs.h"
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#include "critical_section_wrapper.h"
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#ifndef NULL
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#define NULL 0
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#endif
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namespace webrtc {
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class TMMBRSet
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{
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public:
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TMMBRSet();
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~TMMBRSet();
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void VerifyAndAllocateSet(WebRtc_UWord32 minimumSize);
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void VerifyAndAllocateSetKeepingData(WebRtc_UWord32 minimumSize);
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// Number of valid data items in set.
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WebRtc_UWord32 lengthOfSet() const { return _lengthOfSet; }
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// Presently allocated max size of set.
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WebRtc_UWord32 sizeOfSet() const { return _sizeOfSet; }
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void clearSet() {
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_lengthOfSet = 0;
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}
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WebRtc_UWord32 Tmmbr(int i) const {
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return _data.at(i).tmmbr;
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}
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WebRtc_UWord32 PacketOH(int i) const {
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return _data.at(i).packet_oh;
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}
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WebRtc_UWord32 Ssrc(int i) const {
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return _data.at(i).ssrc;
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}
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void SetEntry(unsigned int i,
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WebRtc_UWord32 tmmbrSet,
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WebRtc_UWord32 packetOHSet,
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WebRtc_UWord32 ssrcSet);
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void AddEntry(WebRtc_UWord32 tmmbrSet,
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WebRtc_UWord32 packetOHSet,
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WebRtc_UWord32 ssrcSet);
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// Remove one entry from table, and move all others down.
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void RemoveEntry(WebRtc_UWord32 sourceIdx);
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void SwapEntries(WebRtc_UWord32 firstIdx,
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WebRtc_UWord32 secondIdx);
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// Set entry data to zero, but keep it in table.
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void ClearEntry(WebRtc_UWord32 idx);
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private:
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class SetElement {
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public:
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SetElement() : tmmbr(0), packet_oh(0), ssrc(0) {}
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WebRtc_UWord32 tmmbr;
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WebRtc_UWord32 packet_oh;
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WebRtc_UWord32 ssrc;
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};
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std::vector<SetElement> _data;
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// Number of places allocated.
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WebRtc_UWord32 _sizeOfSet;
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// NUmber of places currently in use.
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WebRtc_UWord32 _lengthOfSet;
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};
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class TMMBRHelp
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{
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public:
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TMMBRHelp();
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virtual ~TMMBRHelp();
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TMMBRSet* BoundingSet(); // used for debuging
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TMMBRSet* CandidateSet();
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TMMBRSet* BoundingSetToSend();
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TMMBRSet* VerifyAndAllocateCandidateSet(const WebRtc_UWord32 minimumSize);
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WebRtc_Word32 FindTMMBRBoundingSet(TMMBRSet*& boundingSet);
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WebRtc_Word32 SetTMMBRBoundingSetToSend(
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const TMMBRSet* boundingSetToSend,
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const WebRtc_UWord32 maxBitrateKbit);
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bool IsOwner(const WebRtc_UWord32 ssrc, const WebRtc_UWord32 length) const;
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bool CalcMinBitRate(WebRtc_UWord32* minBitrateKbit) const;
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protected:
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TMMBRSet* VerifyAndAllocateBoundingSet(WebRtc_UWord32 minimumSize);
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WebRtc_Word32 VerifyAndAllocateBoundingSetToSend(WebRtc_UWord32 minimumSize);
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WebRtc_Word32 FindTMMBRBoundingSet(WebRtc_Word32 numCandidates, TMMBRSet& candidateSet);
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private:
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CriticalSectionWrapper* _criticalSection;
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TMMBRSet _candidateSet;
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TMMBRSet _boundingSet;
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TMMBRSet _boundingSetToSend;
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float* _ptrIntersectionBoundingSet;
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float* _ptrMaxPRBoundingSet;
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};
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} // namespace webrtc
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#endif // WEBRTC_MODULES_RTP_RTCP_SOURCE_TMMBR_HELP_H_
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